CGSC Strain#: 4986
Strain Designation: CA254      Source of Strain: S. Brenner
Other Designations: CA154-11
Sex: Hfr    Point of Origin#: 1   Map Position: 96.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: lacZ13(Oc), lacI22, relA1, thiE1, sup-65
Strain Comments:

• lacZ13(Oc)-- is lacZ₂ of Jacob, originating in Paris strain 3.320. It is an ochre, polar mutation.
• sup-65-- is Brenner's ochre suppressor called su⁺_E.
• lacI22 was formerly called lacI3
• lacI22 was formerly called lac_i3^-
• thiE1 was formerly called thi-1
• Oc = ochre(UAA) mutation

References:

• Brenner, S., J.R. Beckwith 1965. Ochre mutants, a new class of suppressible nonsense mutants. J.Mol.Biol. 13:629-637